Apparatus for use in manufacturing concrete and like blocks, pipes, posts, girders, and the like



v I P. c. CANNON. APPARATUS FOR USE IN MANUFACTURING CONCRETE AND LIKE BLOCKS, PIPES, POSTS, GIRDERS,

AND THE LIKE.

APPLICATION FILED DEC. 10, I920- Patented Jan. 24, 1922;

' Z SHEETS-SHEETI- III . P. C. CANNON.

APPARATUS FOR USE IN MANUFACTURING CONCRETE AND LIKE BLOCKS, PIPES, POSTS, GIRDERS, AND THE LIKE.

APPLICATION FILED DEC. l0, I920.

1,404,57 Patented Jan. 24, 1922.

. 2 SHtETSSHEET 2. 17

luv c 117E011 UNITED STATES PATENT OFFICE.

PERCIVAL CHARLES CANNON, OF WOLVERHAMPTON, ENGLAND, ASSIGNOR T0 CENTRIFUGAL CONCRETE BLOCKS AND POLES LIMITED, OF WESTMINSTER,

LONDON, S. W. 1, ENGLAND.

APPARATUS FOR USE IN MANUFACTURING CONCRETE AND LIKE BLOCKS, PIPES, POSTS, GIRDERS, AND THE LIKE.

Specification of Letters Patent.

Patented J an. 24, 1922.

Application filed December 10, 1920. Serial No. 429,777.

(GRANTED UNDER. THE PROVISIONS or THE ACT or MARCH 3, 192 41 s'mr. L., 1313.

To all whom it may concern.

Be it known that I, PERCIVAL CHARLES CANNON, a subject of the King of Great Britain and Ireland, and residing at Clarence Street, Wolverhampton, in the county of Stafford, England, have invented certaln new and useful Improvements in or Connected with Apparatus for Use in Manufacturing Concrete and like Blocks, Pipes, Posts, Girders, and the like, (for which I have made application for patent in Great Britain, No. 18,839, dated 29th July, 1919, Patent No. 158,012 and No. 21,819, filed 27th February, 1920; Canada, filed 15th December, 1920; Belgium, filed 2nd December, 1920; France, filed 3rd December, 1920; Germany, filed 3rd December, 1920, and 10th January, 1921; Holland, filed 15th March, 1921; Norway, filed 30th March, 1921; Denmark, filed 81st March, 1921,) of which the following is a specification. This invention relates to apparatus for use in manufacturing concrete and like blocks, pipes, posts, girders, and the like, and in which a number of the articles are formed by centrifugal action in a plurality of simulta neously rotated moulds, and has for its object to, improve and simplify the construction of such apparatus.

In two constructions of such apparatus it has been proposed to loosely support the moulds on a number of vertical frictional driving discs arranged under their ends and mounted on a plurality of arallel horizontal shafts or to stand the mou ds, each by one of its ends, on a number of horizontal rotatable tables carried by vertical spindles, driven in unison from a common drive shaft by bevel gearing.

The improved apparatus provided by the present invention comprises a plurallty of parallel horizontal spindles mounted to rotate upon girders or other supports, chain and sprocket or other gearing connecting all of the spindles to one another so that each is positively driven and all of them in unison, means for driving one of the spindles by power, and a clamping device provided on one or each end of each spindle for positively clamping and holding a mould.

Figure 6 is an end view in section of the mould in position.

The apparatus shown comprises a plurality of parallel spindles a mounted to freely rotate upon two parallel girders b or other supports and geared to one another to rotate in unison, such as by means of chains 0 and sprocket wheels (1, one of the spindles being driven by power in any suitable manner, for instance through a belt and pulley 6. One or both ends of eachspindle a is or are each fitted with a clamping device f for supporting a mould. In this manner moulds containing the material or materials of which the articles are to .be formed, are clamped in place in the clamping devices 7 and rotated simultaneously in one or two straight rows. All of the moulds may be of similar shape and dimensions, or they can vary within wide limits.

The moulds which are preferably of wood may be constructed as shown in Figures 4 and 5, so that they may be divided longitudinally to allow of the removal of the final concrete product. Along two opposite edges 17 the mould is nailed as at 16. The bottom of the mould is formed by a metal plate 18 which is screwed to the two sections of the mould formed as described. This plate is slightly bent across the diagonal 20 so that the spring of the pitlte tends to force together the two sections of the mould along the edges 19. The resilience of the plate allows the sections of the mould to be sprung apart sufficiently for the concrete block to be removed easily and without damage. During the filling and spinning operation the mould is closed by means of a lid 21 which over the top end and is clamped to the mouid by it is maintained for a few minutes.

suitable clips. The lid has a circular hole into which a woodenplug 22 is fitted to prevent the mixture escaping when the mould is tilted for placing in the machine and in the initial stage of spinning.

. The moulds containing liquid concrete are placed in the machine and clamped in position by the means hereinafter described, the

machine being then set in motion. The speed ing a mould in each of the clamping devices comprise two opposed V or other suitably shaped brackets 10 one of which is fitted with a movable inner lining or clamping plate 11 of V or other cross-sectional shape, pins 12 rigid with said lining and guided through bosses formed upon the bracket, springs 13 surrounding said pins and tendingto retain the lining within a recess formed in the inner face of the bracket, and a cam lever 14 pivoted upon the bracket and adapted to project through a slot 15 formed in the latter, and to act upon the lining. When the mould is placed in position in the clamping device, opposite corners or portions at one end of said mould are arranged between the brackets and the cam is turned over to depress the lining on to the mould, so that the latter is securely held in position for rotation. Flats are preferably formed on the periphery of the cam to engage the outer edge or surface-of the lining, which Hats constitute means for locking the cam in adjusted position and preventing it loosening 'during rotation of the clamp and mould.

When the cam is moved back to release the mould the lining is automatically retracted out of contact with the latter by the springs 13. The brackets 10 and /or the plates which carry them are preferably slotted to enable said brackets to be adjusted upon said plates and radially relatively to the spindles a.

lit will be appreciated that when pipes, posts and girders are manufactured with the aid of the machine they are preferably short, although long ones could be made by suitably supporting the outer ends of the moulds.

Having now described my invention what I claim as new and desire to secure by Letters Patent is 1. Apparatus for use in manufacturing concrete and like blocks, pipes, posts, girders and the like, comprising in combination a horizontal spindle mounted to rotate upon 2. Apparatus for use in manufacturing concrete and like blocks, pipes, posts, girders and the like, comprising in combination a horizontal spindle mounted to rotate upon supporting means such as girders, .power transmission gearing connected to said spindle whereby it is positively driven by power, two opposed brackets carried by at least one end of said spindle, movable clamping means situated upon the inner side of one of said brackets, means carried by said bracket for quickly moving said clamping means relative thereto and a mould secured between said brackets by said clamping means. a

3. Apparatus for use in manufacturing concrete and like blocks, pipes, posts, girders and the like, comprising in combination a plurality of parallel horizontal spindles mounted to rotate upon supporting means such as girders, power transmission gearing connecting all of the spindles to one another so that each is positively driven and all of them in unison, means for driving one of the spindles by power, a clamping device at both ends of each spindle and a mould secured by said clamping device for rotation about a horizontal axis coinciding with that of the spindle. 4. Apparatus for use in manufacturing concrete and like blocks, pipes, posts, girders, and the like, comprising in combination a plurality of parallel horizontal spindles mounted to rotate upon supporting means such as girders, power transmission gearing connecting all of the spindles to one another so that each is positively driven and all of them in unison, means for driving one of the spindles by power, a vertical face plate attached to at least one end of each spindle, two opposed brackets carried by said face plate, a movable clamping plate lining within one of said brackets, a cam lever adapted to engage and secure said movable clamping plate, and a mould secured between said brackets.

5. Apparatus for use in manufacturing concrete and like blocks, pipes, posts, girders and the like, comprisin in combination a plurality of parallel orizontal spindles mounted to rotate upon supporting means such as girders, chain and sprocket gearing connecting all of the spindles to one another so that each is positively driven and all of them in unison, means for driving one of the spindles by power, a vertical face plate attached to each end of said spindles, two opposed brackets carried by said face plate and radially adjustable thereon, a movable clamping plate lining Within one of said brackets, a cam lever adapted to engage and secure said movable clamping plate, and a mould secured between said brackets for rotation about a horizontal axis coinciding with that of the spindle.

In testimony whereof I have signed my name to this specification.

PERCIVAL CHARLES CANNON. 

